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Features of forged steel fully welded ball valve
Forged steel all-welded ball valve is mainly used for pipelines of various systems in thermal power stations to cut off or connect the pipeline medium. Applicable medium: water, steam and other non-corrosive medium. Compared with other valve products, forged steel valves are characterized by high temperature and high pressure, and a unique self-sealing design. The higher the pressure, the more reliable the sealing. Due to the special performance technical characteristics and special working conditions, the products have also formed characteristics that other products cannot replace.
Hit the ball
Forged steel valves often ignore the problem of grease injection. After refueling the grease gun, the operator selects the connection method of the valve and grease injection at the low temperature shut-off valve, and then performs the grease injection operation. There are two kinds of forged steel gate valves: on the one hand, the amount of grease injected is small, and the amount of grease injected is insufficient, and the sealing surface is accelerated due to the lack of lubricant. On the other hand, excessive fat injection causes waste. It is because there is no accurate calculation of the sealing capacity of different valves according to the type of valve. The sealing capacity can be calculated based on the valve size and type, and then a proper amount of grease can be injected reasonably.
Forged steel all welded ball valve maintenance
Ball valves are generally in the open position during maintenance, and they are closed for maintenance under special circumstances. Other valves cannot be treated as open positions.
Forged steel lengthened end gate valve should observe that the valve diameter is flush with the sealing ring seat. For example, if there is an interference in the opening position of the ball valve, the opening limiter can be adjusted inward to confirm that the diameter is straight and then locked. Adjusting the limit can not only pursue the position of one party on or off, but consider it as a whole. If the open position is flush and the closing is not in place, it will cause the valve to not close tightly. In the same way, when the adjustment is closed, the corresponding adjustment of the opening position should also be considered. Ensure the right-angle travel of the valve. After filling the grease, be sure to seal the filling port. To prevent impurities from entering, or oxidation of lipids at the grease injection port, apply anti-rust grease to the cap to avoid rust. It will be applied in the next operation.
Forged steel cryogenic valves should be considered in the future specific problems in the sequential delivery of oil products. In view of the different qualities of diesel and gasoline, the scouring and decomposition capabilities of gasoline should be considered. In the future valve operation, when encountering the gasoline section operation, add grease in time to prevent wear and tear. When injecting grease, don't ignore the injecting grease in the valve stem. There is a sliding bushing or packing on the valve shaft, and it needs to be kept in a lubricated state to reduce the frictional resistance during operation. If lubrication cannot be ensured, the torque increases when the electric operation wears the parts, and the switch is laborious when manually operated.
Some ball valve bodies are marked with arrows. If there is no English FIOW handwriting, it is the direction of the sealing seat, not used as a reference for the flow direction of the medium, and the direction of valve self-draining is reversed. Normally, double-sealed ball valves have a bidirectional flow direction.
When maintaining the valve, we must pay attention to the water inflow problem in the electric head and its transmission mechanism. Especially the rainwater seeping in the rainy season. One is to rust the transmission mechanism or transmission sleeve, and the other is to freeze in winter. When the electric valve is operated, the torque is too large, and damage to the transmission components will cause the motor to be unloaded or the over-torque protection trips, and the electric operation cannot be achieved. The transmission components are damaged and manual operation is not possible. After the over-torque protection action, manual operation also cannot be switched. Forcible operation will damage the internal alloy parts.
Steel and iron are alloys based on iron, with carbon as the main additive element, and are collectively called iron-carbon alloys.
Smelting the cast pig iron in the iron melting furnace to obtain cast iron (liquid) and casting the liquid cast iron into castings. This cast iron is called cast iron.
What is the difference between cast steel and carbon steel? First, steel is classified by chemical composition
(1) Carbon steel: a. Low carbon steel (C≤0.25%); b. Medium carbon steel (C≤0.25 ~ 0.60%); c. High carbon steel (C≤0.60%).
Steel is classified according to forming method: (1) forged steel; (2) cast steel; (3) hot rolled steel; (4) cold drawn steel.
American standard forged steel fully welded ball valve parameters:
Nominal pressure: 150LB-2500LB
Applicable temperature: -29 ℃ -200 ℃
Operation mode: manual, worm gear, electric, pneumatic, gas-liquid linkage, etc.
Scope of use: natural gas pipelines, heating, heating pipelines, long-distance petroleum and chemical pipelines
Use medium: water, natural gas, coal gas, chemical products, etc.
Manufacturing cycle: 8-10 days, because it is a forged steel valve, it must be customized, so the delivery time is relatively long
Application industry: American standard forged steel fully welded ball valves are widely used in: urban gas, urban heating, petrochemical, shipbuilding, steel, pressure regulating stations, power plants and other pipeline equipment
American standard forged steel fully welded ball valve features:
1. The valve body adopts integral forgings to ensure that there are no quality problems such as trachoma
2. The manufacturing performance of the forged steel material is more reliable, and the whole machine is welded without leakage.
3. The processing accuracy of the sphere is very precise and easy to operate, and the sphere can be customized according to customer requirements
4. For the specific dimensions of American standard forged steel fully welded ball valves, customers can provide drawings and process according to customer drawings
5. The valve seat is also composed of forgings. The seal can be nylon, PPL, hard seal, etc., and the valve seal can be customized according to the requirements.
6. The American standard forged steel all-welded ball valve is in the correct selection, under normal operation, maintenance and use, the service life is longer than ordinary, the number of switches can reach tens of thousands of times, and the service life can reach more than 20 years.
American standard forged steel fully welded ball valve application field:
City gas: Especially as the main switch of the entire pipeline in the main line and high pressure pipeline network.
Centralized heating: output pipeline, main line and branch line of large heating equipment.
Heat exchanger: opening and closing of pipelines and circuits, the relative caliber is relatively small.
Steel plant: various fluid pipes, exhaust gas selective discharge pipes, gas and heat supply pipes, etc.
Various industrial equipment: various heat treatment pipelines, or main pipelines or high pressure pipelines of some gas and gas companies.
Forged steel all-welded ball valve is mainly used for pipelines of various systems in thermal power stations to cut off or connect the pipeline medium. Applicable medium: water, steam and other non-corrosive medium. Compared with other valve products, forged steel valves are characterized by high temperature and high pressure, and a unique self-sealing design. The higher the pressure, the more reliable the sealing. Due to the special performance technical characteristics and special working conditions, the products have also formed characteristics that other products cannot replace.
Hit the ball
Forged steel valves often ignore the problem of grease injection. After refueling the grease gun, the operator selects the connection method of the valve and grease injection at the low temperature shut-off valve, and then performs the grease injection operation. There are two kinds of forged steel gate valves: on the one hand, the amount of grease injected is small, and the amount of grease injected is insufficient, and the sealing surface is accelerated due to the lack of lubricant. On the other hand, excessive fat injection causes waste. It is because there is no accurate calculation of the sealing capacity of different valves according to the type of valve. The sealing capacity can be calculated based on the valve size and type, and then a proper amount of grease can be injected reasonably.
Forged steel all welded ball valve maintenance
Ball valves are generally in the open position during maintenance, and they are closed for maintenance under special circumstances. Other valves cannot be treated as open positions.
Forged steel lengthened end gate valve should observe that the valve diameter is flush with the sealing ring seat. For example, if there is an interference in the opening position of the ball valve, the opening limiter can be adjusted inward to confirm that the diameter is straight and then locked. Adjusting the limit can not only pursue the position of one party on or off, but consider it as a whole. If the open position is flush and the closing is not in place, it will cause the valve to not close tightly. In the same way, when the adjustment is closed, the corresponding adjustment of the opening position should also be considered. Ensure the right-angle travel of the valve. After filling the grease, be sure to seal the filling port. To prevent impurities from entering, or oxidation of lipids at the grease injection port, apply anti-rust grease to the cap to avoid rust. It will be applied in the next operation.
Forged steel cryogenic valves should be considered in the future specific problems in the sequential delivery of oil products. In view of the different qualities of diesel and gasoline, the scouring and decomposition capabilities of gasoline should be considered. In the future valve operation, when encountering the gasoline section operation, add grease in time to prevent wear and tear. When injecting grease, don't ignore the injecting grease in the valve stem. There is a sliding bushing or packing on the valve shaft, and it needs to be kept in a lubricated state to reduce the frictional resistance during operation. If lubrication cannot be ensured, the torque increases when the electric operation wears the parts, and the switch is laborious when manually operated.
Some ball valve bodies are marked with arrows. If there is no English FIOW handwriting, it is the direction of the sealing seat, not used as a reference for the flow direction of the medium, and the direction of valve self-draining is reversed. Normally, double-sealed ball valves have a bidirectional flow direction.
When maintaining the valve, we must pay attention to the water inflow problem in the electric head and its transmission mechanism. Especially the rainwater seeping in the rainy season. One is to rust the transmission mechanism or transmission sleeve, and the other is to freeze in winter. When the electric valve is operated, the torque is too large, and damage to the transmission components will cause the motor to be unloaded or the over-torque protection trips, and the electric operation cannot be achieved. The transmission components are damaged and manual operation is not possible. After the over-torque protection action, manual operation also cannot be switched. Forcible operation will damage the internal alloy parts.
Steel and iron are alloys based on iron, with carbon as the main additive element, and are collectively called iron-carbon alloys.
Smelting the cast pig iron in the iron melting furnace to obtain cast iron (liquid) and casting the liquid cast iron into castings. This cast iron is called cast iron.
What is the difference between cast steel and carbon steel? First, steel is classified by chemical composition
(1) Carbon steel: a. Low carbon steel (C≤0.25%); b. Medium carbon steel (C≤0.25 ~ 0.60%); c. High carbon steel (C≤0.60%).
Steel is classified according to forming method: (1) forged steel; (2) cast steel; (3) hot rolled steel; (4) cold drawn steel.
American standard forged steel fully welded ball valve parameters:
Nominal pressure: 150LB-2500LB
Applicable temperature: -29 ℃ -200 ℃
Operation mode: manual, worm gear, electric, pneumatic, gas-liquid linkage, etc.
Scope of use: natural gas pipelines, heating, heating pipelines, long-distance petroleum and chemical pipelines
Use medium: water, natural gas, coal gas, chemical products, etc.
Manufacturing cycle: 8-10 days, because it is a forged steel valve, it must be customized, so the delivery time is relatively long
Application industry: American standard forged steel fully welded ball valves are widely used in: urban gas, urban heating, petrochemical, shipbuilding, steel, pressure regulating stations, power plants and other pipeline equipment
American standard forged steel fully welded ball valve features:
1. The valve body adopts integral forgings to ensure that there are no quality problems such as trachoma
2. The manufacturing performance of the forged steel material is more reliable, and the whole machine is welded without leakage.
3. The processing accuracy of the sphere is very precise and easy to operate, and the sphere can be customized according to customer requirements
4. For the specific dimensions of American standard forged steel fully welded ball valves, customers can provide drawings and process according to customer drawings
5. The valve seat is also composed of forgings. The seal can be nylon, PPL, hard seal, etc., and the valve seal can be customized according to the requirements.
6. The American standard forged steel all-welded ball valve is in the correct selection, under normal operation, maintenance and use, the service life is longer than ordinary, the number of switches can reach tens of thousands of times, and the service life can reach more than 20 years.
American standard forged steel fully welded ball valve application field:
City gas: Especially as the main switch of the entire pipeline in the main line and high pressure pipeline network.
Centralized heating: output pipeline, main line and branch line of large heating equipment.
Heat exchanger: opening and closing of pipelines and circuits, the relative caliber is relatively small.
Steel plant: various fluid pipes, exhaust gas selective discharge pipes, gas and heat supply pipes, etc.
Various industrial equipment: various heat treatment pipelines, or main pipelines or high pressure pipelines of some gas and gas companies.
